Apparatus for treating liquid furnace material



Dec. 12, 1933. 1,939,138

APPARATUS FOR TREATING LIQUID FURNACE MATERIAL c. H. S-ICHOL Filed May 20, 1930 the wheel turns on and the same process takes f towards the wheel.

Patented Dec. 12, 1933 ArrAnA'rUs roa TREATING LIQUID FURNACE MATERIAL CarI Heinrich Schol, Allendorl', Germany Application in 5 Claims.

It is knownthat liquid blast furnace slag. generator slag and similar liquid furnace-materials can be swollen into a very porous mass. The usual processes and devices however are only successful in-the treatment of those kinds of liquid furnace-material whose chemical composition as well as high temperature are specially appropriate to the purpose. There are however a great many kinds of similar furnace-material that cannot be treated by means of the usual processes and devices as they have not the ap propriate composition and temperature to be easily swollen and rendered porous.

The present invention relates to an apparatus which makes it possible to swell the furnace material and obtain a porous cellular structure which is hard to disintegrate and to solidify the furnacematerial in this state. According to this process the mass is obtained entirely dry or nearly dry,

which fact increases its resistance to pressure I and breaking.

The invention is illustrated diagrammatically and by way of example in the accompanying awi g. Y

Fig. 1 is a view in elevation showing one 'form or the apparatus.

Fig. 2 is a view in elevation showing a modified form of apparatus.

In the process according to the invention use is made of a sumciently flre-prooted wheel A (Fig. 1) which turns slowly and of which the rim is provided with aseries of flat" cavities a, which are' filled with water or any appropriate substance b shortly before the place where they receive the fall of the ,liquid-Iurnace-material..

As the wheel turns, the liquid furnace-material falls down from the trough it into the cavity, where it comes into contactwith the liquid required for the swelling. At this m'omentthe furnace-material swells up immediately into a spongy cellular mass and begins to solidify, while place in the next cavity.

In order to cool down and solidify the swollenmass more quickly, the hot air and gas may be removed by an exhauster e and used for other purposes. By. the effect of a draughtiproduced in this way the-dresh ai'r advances more quickly As the wheel goes on turning the swollen porous pumice mass falls into apit from whence it is collected 'by an elevator f or any other appropriate transporting device.

It may happen that some of the solidified mass remains clinging to the rim. Itwill then be removed by a scraper a or a little cutter like a cog ed wheel which turns in the direction opposite to the rim.

While according to Figure 1 the flat bowl-'- shaped cavities are filled from the top May 20, 1930, Serial No. 454,164, and Germany January 28, 1930 duit or pipe, this filling with liquids, vapour, gas or any other appropriate substance, can be e!- fected under pressure from within the wheel into the incandescent furnace mass as is shown in Figure 2.

For this purpose each cavity is connected with a conduit h provided with a closing device. Each pipe may be disposed so as to be interchangeable for the frequent and easy cleaning of the same. The self-regulating closing valve may be constructed in such a manner that as a cavity reaches the operating position the corresponding little lever k slides over a guide rod 1. which pushes the lever k upwards and opens the valve. As soon as the furnace-material 'is swollen up in the cavity during about a quarter of a turn of the wheel, the lever is is pusheddownwards by another guide rod 1 n so that the valve is closed again. j

The present process makes it possible to fill the cavities with exactly as much liquid or other substance as is required for the swelling of the liquid furnace-material. In this way-it is also possible to obtaina cellular porous mass which is entirely or nearly dry, which exceedingly increases its resistance to pressure andbreakage.

' What I claim is:

1,-An apparatus for swelling and-rendering porous liquid iurnace material, consisting of a wheel with flat bowl shaped cavities in its rim, means for leading the liquid furnace-material into the said cavities and means for supplying said cavities in advance of the entry of said material with a limited amount of a fluid capable of swelling up said material into a cellular, por. ous mass, and allowing it to solidify in this state;

the means for supplying the said 'fluid consisting of conduits leading to the bottoms oi the cavities.

2. An apparatus as claimed in claim 1 in which the means for supplying the said' fluid consist of conduits leading to the bottoms of the cavities, of valves provided in the conduits and ofmeans capable of operating the valves to open during about V of a revolution of the wheel, and closed during about /4 of a revolution.

3. In anapparatus as claimed in claim 1, a scraping device for removing particles of slag left clinging to the wheel.

'4. In an apparatus as claimed inclaim 1, a device for supplying cooling air to the material on the wheel.

5. In an apparatus as claimed in claim 1, a

device for supplying cooling air to the material CARL HEINRICH SCHOL.

by a con- 

